C2K

com.hackerapps.c2k
by Zapstore _@zapstore.dev

Republished from GitHub / F-Droid by the Zapstore main account.

C2K is an offline running trainer that guides you from the couch to running 5K, 10K, and beyond. Follow a clear plan, hear hands-free coaching, and keep your progress private — with no ads and no tracking. Programs: • Pre-C25K — 3-week gentle starter for absolute beginners • Couch to 5K (C25K) — 9-week program, 3 runs per week • Bridge to 10K (B210K) — 6-week bridge for C25K graduates • Couch to 10K (C210K) — 14-week program, continues from C25K • One Hour Runner — 13-week progression from 30 to 60 minutes continuous running • 5K Improver — 8-week speed and stamina program for runners who can already complete 5K Features: • Audible voice prompts — "Start running", "Walk for 90 seconds", countdown warnings • Customizable coaching — adjust voice speed/volume, countdown warning timing, and mid-interval cues • Test voice playback before a workout, with Android text-to-speech diagnostics • Vibration cues as an alternative or addition to voice • Adjustable vibration strength and language selection • Background workout timer — continues with screen off • GPS tracking (optional) — records distance and pace; works without GPS too • Treadmill mode — indoor runs without GPS • Workout history — session log with total distance, time, best pace, longest run, and calorie estimates • Progress tracking — remembers which weeks and days you've completed, with the option to reset • In-app running guide — FAQ covering pacing, gear, and terminology • Available in 8 languages — English, German, Spanish, French, Galician, Portuguese (Brazil), Russian, Turkish • Works offline — no internet permission required • No proprietary services required — compatible with GrapheneOS and privacy-focused devices Permissions: • FOREGROUND_SERVICE — keeps the workout timer running with screen off • WAKE_LOCK — prevents the CPU sleeping mid-workout • ACCESS_FINE_LOCATION — optional GPS for distance/pace tracking (you can skip this) • POST_NOTIFICATIONS — workout notification with pause/stop controls • VIBRATE — optional vibration cues during workouts C2K is free software released under the GNU General Public License v3.

First release: Jul 29, 2026, 10 total releases.

Most recent release: Sep 17, 2026.

Repo

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Underlying data available via MCP: app_zaps, app_releases.

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Underlying data available via MCP: app_zaps, app_releases.

Releases

  • Sep 17, 2026 1.2.19
    ## What's new • The workout notification now shows how many running intervals are left, not just overall progress. • Added an optional voice reminder that periodically announces time remaining during an interval, on a cadence you choose in Settings. ## SHA-256 `c13d81bf8430b31e0cc39ca71506697fc3e75e2f9c0e644d7287c35e63b93f0d`
  • Sep 10, 2026 1.2.18
    ## What's new • Fixed a rare crash on Android 10 and older devices that could happen when location services were turned on or off during a workout. ## SHA-256 `dc620320110ad4888042176d68e43acb720b17491d4c05838d09420b763fc238`
  • Sep 3, 2026 1.2.17
    ## What's new • Added manual language selection with locale-aware workout notifications and voice announcements. • Added a voice test and actionable text-to-speech diagnostics in Settings. • Added contributor credit for the language-selection contribution. ## SHA-256 `8ba2e56aac544db06416e561334b6ca6ad8aaf8c6116c3108253a6f9f056a8cd`
  • Sep 2, 2026 1.2.16
    ## What's new • Added configurable vibration strength with Light, Medium, and Strong presets. ## SHA-256 `ccb08d5f329dd2fdd4b44c217803beaf5b702457e9de16d0e71a950926fb9348`
  • Aug 29, 2026 1.2.15
    ## What's new • Added Turkish language support. Thanks to Ahmet Emre for the translation. ## SHA-256 `f776ba6f28df1953381cd7589249f70eab72852d05cd3969dfa55e3957650a9e`
  • Aug 20, 2026 1.2.14
    Fix: workout could crash on start if a permission prompt (activity recognition or location) was denied. SHA-256: 95579e207ee49fe7eba6146916e8acb63a7d60765806a157f716947b5d0bb7b7
  • Aug 9, 2026 1.2.13
    • New: streaks now count weeks instead of days — rest days no longer reset your streak • Fix: "Continue" now suggests the workout after your latest completed day, so skipping ahead works • Fix: faulty GPS readings no longer inflate distance; previously inflated workout distances are repaired automatically • Fix: day buttons no longer wrap on small screens; cleaner continue button SHA-256: efe544f26402eace7fe18ee2bcf29fb19c0b5eddc2df681bb060d62791932a04
  • Jul 31, 2026 1.2.11
  • Jul 29, 2026 1.2.12
    • Fix: correct singular/plural word forms (e.g. "1 minute" vs "5 minutes") are now used for workout duration, streaks, and countdown voice announcements in every language • Fix: the completed-day button was oversized on some screens • Fix: Russian voice prompts for warm-up/cool-down no longer mis-stress "разминочную"/"заминочную" SHA-256: a5aa6d9d41b6097acd69b7aff02442761aacb12db02141edb24e93068dc96b9b
  • Jul 29, 2026 1.2.9